Related Information for Zao There are at least two bands called ZAO, the first of which are still active, the latter haven't done anything since 1994:1) Zao (pronounced /ˈzeɪ.oʊ/) is a band from Greensburg, Pennsylvania and are considered one of the founding metalcore groups. However they began in 1993 in Parkersburg, West Virginia, playing a style of Hardcore similar to bands such as Earth Crisis and Snapcase. Zao has hosted several musicians and endured numerous roster changes to the point wh.. read more